UBUNTU-CVE-2023-5345

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    UBUNTU-CVE-2023-5345

    Published: 3 Oct 2023Last Modified: 30 Sept 2026
    Upstream:
    CVE-2023-5345
    Aliases:
    USN-6461-1
    USN-6502-1
    USN-6502-2

    Summary:

    Details: A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.

    References: https://ubuntu.com/security/CVE-2023-5345, https://git.kernel.org/linus/e6e43b8aa7cd3c3af686caf0c2e11819a886d705, https://kernel.dance/#e6e43b8aa7cd3c3af686caf0c2e11819a886d705, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6e43b8aa7cd3c3af686caf0c2e11819a886d705, https://kernel.dance/e6e43b8aa7cd3c3af686caf0c2e11819a886d705, https://ubuntu.com/security/notices/USN-6461-1, https://ubuntu.com/security/notices/USN-6502-1, https://ubuntu.com/security/notices/USN-6503-1, https://ubuntu.com/security/notices/USN-6502-2, https://ubuntu.com/security/notices/USN-6502-3, https://ubuntu.com/security/notices/USN-6520-1, https://ubuntu.com/security/notices/USN-6502-4, https://ubuntu.com/security/notices/USN-6537-1, https://ubuntu.com/security/notices/USN-6572-1, https://ubuntu.com/security/notices/USN-6607-1, https://www.cve.org/CVERecord?id=CVE-2023-5345

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2023-5345 | CVE-DB